Structural and molecular properties of dialdehyde starch

Fiedorowicz, Maciej; Para, Andrzej

doi:10.1016/j.carbpol.2005.08.054

Cited by 88 publications

(56 citation statements)

References 21 publications

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“…[ Similar observation has been reported (Fiedorowicz and Para, 2006;Zhang et al, 2007). The reason for this could be that, when KIO 4 cleaved the C2-C3 bonds of the glucose units of cassava starch, the oxidation also led to disruption of both α-D-(1-4) and α-D-(1-6) glucosidic bonds which causes the average molecular weight of dialdehyde starch to decline drastically (Fiedorowicz and Para, 2006).…”

Section: Average Molecular Weight Of Dassupporting

confidence: 80%

“…The contents of the aldehyde groups for DAS-A, DAS-B, DAS-C were as follows: 67.62%, 50.72% and 37.38%, respectively. The reason could be that, when the molar ratio of potassium periodate to cassava starch increased, the superfluous oxidant degraded the starch and caused some of the DAS to dissolve in the water, resulting in a reduced DAS yield (Fiedorowicz and Para, 2006). Another reason could be that starch is known to have a tendency to hydrolyze at pH lower than 7.0, and this will be accelerated by lower pH and oxidant concentration (Zhang et al, 2007).…”

Section: Content Of the Aldehyde Groups Of Dassmentioning

confidence: 99%

“…The reason for this could be that, when KIO 4 cleaved the C2-C3 bonds of the glucose units of cassava starch, the oxidation also led to disruption of both α-D-(1-4) and α-D-(1-6) glucosidic bonds which causes the average molecular weight of dialdehyde starch to decline drastically (Fiedorowicz and Para, 2006). The molecular weight of DAS as a function of carbonyl content, concentrations of the polymer solutions and that of the pure solvent and, the reduced viscosity are shown in Table 2 above.…”

Section: Average Molecular Weight Of Dasmentioning

confidence: 99%

See 2 more Smart Citations

Preparation and characterization of dialdehyde 2, 3-diaminopyridine starch chelating polymer and its sorption potential for Cd(II), Cu(II) and Ni(II) ions in aqueous media

Danjani¹,

Salisu²,

Usman³

2017

Bayero J. Pure App. Sci.

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Section: Average Molecular Weight Of Dassupporting

confidence: 80%

Section: Content Of the Aldehyde Groups Of Dassmentioning

confidence: 99%

Section: Average Molecular Weight Of Dasmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and characterization of dialdehyde 2, 3-diaminopyridine starch chelating polymer and its sorption potential for Cd(II), Cu(II) and Ni(II) ions in aqueous media

Danjani¹,

Salisu²,

Usman³

2017

Bayero J. Pure App. Sci.

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“…It is known by ref. [15] that the higher the oxidation degree, the bigger the grain rigidity, and the weaker the solubility, so it is hard to supply enough aldehyde group for reaction. Therefore, we chose appropriate oxidation degree for a drug carrier.…”

Section: Aldehyde Group Content Analysismentioning

confidence: 99%

Dialdehyde starch nanoparticles: Preparation and application in drug carrier

Xiao

Tong

et al. 2007

CHINESE SCI BULL

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Dialdehyde starch nanoparticles (DASNP) were prepared by the redox reaction of NaIO 4 and starch inwater-in-oil microemulsion. IR spectrum showed that DASNP had aldehyde groups, and quantitative alkali consumption showed that its dialdehyde content was about (50±5)%. The average diameter of DASNP determined by SEM was about 100 nm. TGA-DTA showed that its thermal stability was better than starch nanoparticle (StNP) and dialdehyde starch (DAS). Its low biological toxicity was detected by cell experiment. Also the best mass ratio of doxorubicin (DOX) to combined DASNP detected by UV-VIS was 15 : 1, and the product was effective for controlled release of DOX. The cell experiment showed that the drug-carrier particle (DOX-DASNP) can release DOX for a long time and strengthened the effect of the anticancer drug. This work demonstrates that the DASNP, which has good thermal stability, small particle size, low biological toxicity, and slowly anticancer drug-releasing to strengthen drug effect, is a potentially useful carrier for anticancer drug. dialdehyde starch, nanoparticle, mammary cancer cell, drug carrier, doxorubicin

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“…However, For DAS3 the intrinsic viscosity [Ƞ] which is the intercept was found to be 11.484 and the average molecular weight of DAS3 was 13,182. The reason for this could be that, when KIO 4 cleaved the C2-C3 bonds of the glucose units of cassava starch, the oxidation also led to disruption of both α-D-(1-4) and α-D-(1-6) glucosidic bonds which causes the average molecular weight of dialdehyde starch to decline drastically (Fiedorowicz and Para, 2006).…”

Section: Estimation Of Average Molecular Weightmentioning

confidence: 99%

Preparation and characterization of dialdehyde starch urea (DASU) and, it`s sorption potential for Co(ii), Pb(ii) and Zn(ii) ions from aqueous solution

Usman¹,

Salisu²,

Danjani³

2017

Bayero J. Pure App. Sci.

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Dialdehyde starch urea (DASU) was prepared by the reaction of dialdehyde starch (DAS) from periodate oxidized cassava starch with urea, which was then used to adsorb Co(II), Pb(II) and Zn(II) ions from aqueous solution. Starch modified starches and starch complexes were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) to determine the structure and morphology respectively. The percentages of aldehyde contents of the three kinds of DAS, designated as DAS1, DAS2 and DAS3 were 45.2%, 61.2% and 86.94% respectively. The results indicated that the higher the concentration of periodates, the higher the percentage of aldehyde content in DAS. DAS1 with the content of the aldehyde groups of 45.2% had an average molecular weight of 85,853, while the average molecular weight of DAS2 with the content of the aldehyde groups of 61.2% was 15,466. When the content of aldehyde groups increased to 86.94%, the average molecular weight of DAS3 was fund to decrease to 13,182. The Degree of substitution (DS) of urea was 0.67and DS significantly increase with the increase in percentages of nitrogen content in the polymer adsorbent. Adsorption capacity for Co(II), Pb(II) and Zn(II) ions were found to be 16.01mg/g, 21.73mg/g and 7.18mg/g respectively.

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Structural and molecular properties of dialdehyde starch

Cited by 88 publications

References 21 publications

Preparation and characterization of dialdehyde 2, 3-diaminopyridine starch chelating polymer and its sorption potential for Cd(II), Cu(II) and Ni(II) ions in aqueous media

Preparation and characterization of dialdehyde 2, 3-diaminopyridine starch chelating polymer and its sorption potential for Cd(II), Cu(II) and Ni(II) ions in aqueous media

Dialdehyde starch nanoparticles: Preparation and application in drug carrier

Preparation and characterization of dialdehyde starch urea (DASU) and, it`s sorption potential for Co(ii), Pb(ii) and Zn(ii) ions from aqueous solution

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